Week in Pictures | February 24, 2012

In this Sept. 23, 2008, file photo, Dr. Harold Dauerman checks monitors during a catheterization lab heart procedure in Burlington, Vt. Vermont small businesses that want to keep offering employee health insurance will have to do it through a state system beginning in 2014. The bill approved by the House Health Care Committee would allow those businesses to offer high-deductible health plans, over the objections of consumer advocates.(AP Photo/Toby Talbot, File)

Kansas state Rep. Geraldine Flaharty, far left, a Wichita Democrat, makes a point during a House Pensions and Benefits Committee, as other committee members watch, Monday, Feb. 20, 2012, at the Statehouse in Topeka, Kan. The committee expects to consider alternatives to a plan for starting a 401(k)-style retirement plan for new teachers and government workers. (AP Photo/John Hanna)

This Aug. 26, 2009 photo shows Dr. Pedro Jose Greer, right, preparing to do a colonoscopy at Mercy Hospital in Miami. A new study conducted by researches at Sloan-Kettering Cancer Center found that colonoscopies reduced the chance of death by colon cancer by 53%. The effectivness of colonoscopies in preventing death was previously debated. photo/Lynne Sladky)

Republican presidential candidate, former Pennsylvania Sen. Rick Santorum, left, and former Massachusetts Gov. Mitt Romney share a laugh at the end of a Republican presidential debate Wednesday, Feb. 22, 2012, in Mesa, Ariz. Primary voters in Michigan and Arizona go to the polls on Tuesday in what could be a decisive contest that finally winnows out a clear front-runner.(AP Photo/Jae C. Hong)